Describe the bug
I was playing on a personal server that I've been hosting for my friends and I, when we came across an issue between SecretRoomsMod and Furniture Mod's couch. Looking at the one way glass after I placed it on a couch crashed our games, and didn't crash us when we weren't (thankfully we got rid of it, so we didn't have to avoid that area entirely) I have already gone to the SRM repo and reported it, (AbrarSyed/SecretRoomsMod-forge#272) and he came back telling me I should ask you next, so here I am.

Crash report
https://pastebin.com/2fKtHqKz
To Reproduce

1. Grab any colored Couch
2. Take a One Way Glass block from SRM mod
3. Place One Way Block On Couch
4. Enjoy crashing the game

Please complete the following information:

• Minecraft Version: 1.12.2
• Mod Version: 6.2.0

I was extremely curious and was trying to hide something

This is not a conflict but just a bug in general. WIll be fixed soon